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CVE-2023-53354

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: skbuff: skb_segment, Call zero copy functions before using skbuff frags Commit bf5c25d60861 ("skbuff: in skb_segment, call zero…

Published Sep 17, 2025CWE-476EPSS 0.21%

Overview

CVE-2023-53354 is a high-severity vulnerability. It was published on September 17, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

skbuff: skb_segment, Call zero copy functions before using skbuff frags

Commit bf5c25d60861 ("skbuff: in skb_segment, call zerocopy functions

once per nskb") added the call to zero copy functions in skb_segment().

The change introduced a bug in skb_segment() because skb_orphan_frags()

may possibly change the number of fragments or allocate new fragments

altogether leaving nrfrags and frag to point to the old values. This can

cause a panic with stacktrace like the one below.

[ 193.894380] BUG: kernel NULL pointer dereference, address: 00000000000000bc

[ 193.895273] CPU: 13 PID: 18164 Comm: vh-net-17428 Kdump: loaded Tainted: G O 5.15.123+ #26

[ 193.903919] RIP: 0010:skb_segment+0xb0e/0x12f0

[ 194.021892] Call Trace:

[ 194.027422] <TASK>

[ 194.072861] tcp_gso_segment+0x107/0x540

[ 194.082031] inet_gso_segment+0x15c/0x3d0

[ 194.090783] skb_mac_gso_segment+0x9f/0x110

[ 194.095016] __skb_gso_

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/04c3eee4e13f60bf6f9a366ad39f88a01a57166eRefgit.kernel.org/stable/c/2ea35288c83b3d501a88bc17f2df8f176b5cc96fRefgit.kernel.org/stable/c/6c26ed3c6abe86ddab0510529000b970b05c9b40Refgit.kernel.org/stable/c/8836c266201c29a5acb4f582227686f47b65ad61Refgit.kernel.org/stable/c/d44403ec0676317b7f7edf2a035bb219fee3304eRefgit.kernel.org/stable/c/d5790386595d06ea9decfd9ba5f1ea48cf09aa02Refgit.kernel.org/stable/c/f99006e840a4dbc8f5a34cecc6b5b26c73ef49bbRefgit.kernel.org/stable/c/fcab3f661dbfd88e27ddbbe65368f3fa2d823175

How CyberStrike helps

Frequently asked questions

What is CVE-2023-53354?

CVE-2023-53354 is a high-severity vulnerability. It was published on September 17, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2023-53354?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-53354?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-53354?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-53354 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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